Hinge.



D. R. MILKE.

HINGE.

APPLICATION FILED JUNE so, 1909.

Patented Feb 15,1910.

EY I

1 ai; .nf/f f ATTORNEY.

OTTO R. MILKE, 0F HOLYOKE, MASSACHUSETTS.

HINGE.

Specification of Letters Patent.

Patented Feb. 15, i910.,

Application filed June 30, 1909. Serial No. 505,212.

To all whom it may concern.'

Be it known that I, OTTO R. MILKE, a citizen of the United States ofAmerica, and resident of Holyoke, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inHinges, of which the following is a full, clear, and exact description.

The object of this invention is to provide a hinge of such constructionthat when the hinge-connected parts have relations one in extension ofthe other and both in the same plane, there will be no portion of thehinge at the adjacent edges of the connected parts which stands abovethe top face of such parts, while, on the other hand, there is noopening or cavity at the location of the hinge.

Such a hinge as acquired by the exercise of this invention isparticularly advantageous and desirable for sewing machine tops, andespecially those which are known as drop tops used where the sewingmachine is automatically caused to disappear below the table proper whenthe extension leaf is overturned on the table.

The invention consists in the combination or arrangement of parts andthe construction of the parts of the hinge all substantially ashereinafter described and set forth in the claims.

In the drawings Figure l is a plan view of my improved hinge as appliedfor connecting the table top proper and a leaf or extension thereof.Fig. 2 is a vertical section on line 2 2, Fig. l, the parts being shownas in extended relations. Fig. 3 is a view similar to Fig. 2, with theparts shown as in folded relations. Fig. 4 is an edge view of Fig. 3.Figs. 5 and 6 are perspective views of the most important portions ofthe hinge shown in separated relations,those in Fig. 6 being representedinverted.

In the drawings A and A2 represent hinge plates adapted to be sunkinmortises in arts to be connected, such, for instance, as the table top Band its leaf or extension B2. These frame plates have alined apertures aand a2 opening to their matching edges.

C represents a link bar which is fitted in the aperture a2 of the frameplate A2 and having its one end connected by pivot CZ to the frame platenear the inner end of the aperture a2 therein,such frame plate having asshown at Fig. 6, the depending opposed ear lugs e e; and said link barextends beyond the matching edge of the frame plate A2 for a slightdistance within the aperture in the frame plate A and is, by pivot g,connected to the frame plate A, such plate being swelled or thickened asindicated at h i1, and perforated for the reception of the pivot pinwhich has a driving fit therethrough.

D represents a lever-like bar which by its one end portion is pivotallyconnected yto the frame plate A at the inner end of the aperture atherein,- representing the connecting pivot and 2, 2, the depending earpieces provided to such plate A through which the pivot passes with adriving fit.

The link bar C is provided at its end adjacent its pivot with anengagement toe j which is so related to the end of the leverlike bar Dthat when the latter is swung over from the position shown in Fig. 3 tothat shown in Fig. 2, such toe will engage and dig up the end of the barD and move it to its position flush with the top face of the hingeframes, the link bar also at such time assuming the flush relation.

The lever like bar D has transverse trunnion-like stop members m, m,which engage under the frame plate A at the opposite margins of theaperture the locations of the stops being such as to limit the upwardmovement of the part D so that it will acquire its fiush posit-ion asshown.

o and 02 represent spiral springs which in the present instance areshown as under and exerting stress upwardly relatively to both therunning bars C and the lever like bar D.

The link bar C is provided with a downwardly extending transverse flangeor lip t2 which is operative, when the hinge parts are in foldedrelations as shown in Fig. 3, to form a closure for the opening head inthe hinge connected part for the acconnnodation of the hinge.

Vhen the hinged parts have folded relations as shown in Fig. 3, in whichit is pen ceived that the line of the link C between the pivots g and CZis one obliquely crossing the plane of the top of the hinge frame A andspace must be allowed for occupancy of a portion of the link in suchposition below the plane of the top of the hinge plate, the yielding, ina downward direction, of the lever-like member D insures the properfreedom of action as manifest.

The link bar C has at each side, and intermediate of its length,downwardly extending members s with outwardly extending lugs taccommodated in recesses u on the part on which the hinge plate A2 issecured. These lugs prevent the possibility ot' the hinged part B2 beingswung upwardly in any extended degree, from the pivot z' as its ulcrum,by reason of the stop lugs t having positions for engagements under theplate A2 at the margins of the aperture a2 therein.

l claim l. In a hing-e, in combination a pair of frame plates bothhaving alined apertures opening to their matching edges, a link barfitted in the aperture of one ot' the trame plates having its one endpivotally connected to such plate, and having its other end pivotallyconnected to the other frame plate, and i the other frame plate having abar pivoted thereto at the inner end of its aperture and having itsextremity` terminating to form with the link bar a flat andsubstantially continuous closure for the matching apertures of bethplates.

2. In a hinge, in combination, a pair of trame plates having matchingapertures opening at their adjacent edges, a link bar having one endpivoted to the frame plate at the inner end of its aperture and havingits other end extending beyond the aperture in such frame plate andpivoted to the other frame plate near its matching edge, and a barfitting in the aperture of the other frame plate, and pivoted at itsinner' end to the latter, and means to limit the upward movements ofsaid bars relatively to the frame plates.

3. In a hinge, in combination, frame plates having apertures opening totheir matching edges, one of said plates having a link bar pivoted inthe aperture thereof near the inner end of the latter, and said barextending beyond the end of the aperture and having an engagement toe,the other trame plate having a bar in the aperture thereof pivotallyconnected to such plate near the inner end of its aperture and havingits other end extended te position near the outer end of its apertureand adapted to be engaged by said toe of said link.

1l. ln a hinge, in combination, a pair of Ytrame plates having aperturesopening to their matching edges, a pair ot' bars fitted in saidapertures, both being vpivotally connected to the respective plates nearthe inner ends of the apertures, one of said bars also having a pivotalconnection to the frame plate opposite that to which it is itselfpivotally connected, both ot said bars having laterally extending stopsfor engagement with the undersides of the frame plates, and springsexerting an upward pressure to said plates.

Signed by me at Springfield, Massachusetts, in presence otl twosubscribing witnesses.

OTT() R. MILKE.

`Witnesses Gr. R. DRiscoLL, XVM. S. BnLLows.

